Coach Todd Haley finally revealed one of the great mysteries of the offseason, officially naming coordinator Bill Muir as the team's primary offensive play-caller.

Muir scripted and called plays during the preseason, said Haley, who was thought to have considerable influence on play-calling when he promoted Muir from offensive line coach earlier this year. Haley, a former coordinator with Arizona, said he would have input during the week on how the offense should be designed but would leave the offense in Muir's hands.

Muir is a longtime NFL coach, but he has never been a team's primarily play-caller. He was Tampa Bay's coordinator when the Bucs won the Super Bowl, but that year, head coach Jon Gruden called plays.

They put Muir up in the box w/Sirrianni. Will be a good year to learn things from a different perspective for Sirrianni. Plus working with Zorn is invaluable to him. It also leaves Perles in charge of the OL on the sidelines and puts him in a position to step up and show whether he can handle it or not. Looks like the call goes to Zorn who relays it to Cassel. Also looked like Haley took over from time to time based on the pre season games.